What was found
AT TAKEOFF CAPTAIN RECEIVED A FLASHING, SPD LIM, WARNING ON PFD NEXT TO SPEED TAPE. ALL SPEED LIMIT INFO WAS LOST ON CAPTAIN'S PFD. UPON RETRACTING SLATS, RECEIVED SLATS SYS 1 FAULT. CYCLED SLATS IAW QRH BUT FAULT REMAINED, REPEAT WU. SFCC NR 1 FAULTED, SFCC NR 2 FAULTED. LT RETRACT SWITCH ALSO CHECKED SLAT TORQUE LIMITERS, NEITHER TRIPPED. WILL CONTINUE TO TROUBLE SHOT. FOUND NR 2 SFCC UNIT FAULTED. R & R NR 2 DUE TO FAULT & NR 1 SFCC PRECAUTIONARY IAW AMM A300 27-51-18. OPERATIONS CHECKED GOOD. .